Canty Glass Reactor Page

Technical Report: Canty Glass Reactor Systems Date: October 26, 2023 Subject: Technical Overview, Operating Principles, and Applications of Canty Glass Reactors Prepared For: Engineering and Process Development Team

1. Executive Summary The Canty Glass Reactor is a specialized piece of process equipment designed to bridge the gap between laboratory-scale research and full-scale production. Unlike traditional glass-lined steel reactors or standard borosilicate vessels, the Canty system is defined by its unique integration of a jacketed glass vessel with a specialized cantilevered agitation system and advanced viewing technology. This report outlines the design features, operational advantages, safety considerations, and primary industrial applications of the Canty Glass Reactor.

2. Introduction In the chemical and pharmaceutical industries, the need for visibility during a reaction process is critical for quality control and safety. However, standard glass vessels are often limited in pressure and temperature capabilities, while steel reactors lack visual access. The J.M. Canty company has addressed this by developing a reactor system that utilizes a high-strength glass vessel capable of withstanding significant pressure and temperature, combined with a unique top-entry, cantilevered agitator design. This eliminates the need for a bottom bearing, reducing contamination risks and simplifying cleaning validation.

3. Key Design Features 3.1. The Vessel Construction canty glass reactor

Material: The vessel is typically constructed from high-purity borosilicate glass, offering excellent chemical resistance and thermal shock properties. Jacketing: The reactor features an integral heating/cooling jacket. This allows for precise temperature control via thermal fluid circulation. Pressure Rating: Unlike standard atmospheric glassware, Canty reactors are engineered for pressure service (typically up to 3–6 bar depending on the model), making them suitable for reactions requiring slight pressurization or vacuum. Flanged Design: The vessel utilizes a clamped flange connection between the body and the top head, allowing for easy disassembly for cleaning and maintenance.

3.2. Cantilevered Agitation System The defining characteristic of the Canty reactor is its agitation mechanism.

No Bottom Bearing: Traditional glass reactors often require a support bearing at the bottom of the vessel to stabilize the shaft. Canty utilizes a robust top-drive system with a heavy-duty bearing housing. The shaft is "cantilevered" (suspended from the top) without touching the bottom of the vessel. Benefits: Technical Report: Canty Glass Reactor Systems Date: October

Elimination of "Dead Spots": Bottom bearings are notorious for trapping product, leading to cross-contamination. Removing the bearing ensures a crevice-free bottom. Ease of Cleaning: The unobstructed interior allows for 360-degree access during CIP (Clean-in-Place) procedures. Drainage: The flat or dished bottom has no obstructions, allowing for complete drainage of the product.

3.3. Visual Process Integration Canty is well known for its vision systems. The reactors are often integrated with process cameras and lighting.

Real-Time Monitoring: Operators can visually monitor crystal formation, color changes, or foam levels through the transparent vessel wall or integrated sight glasses. In-Situ Analysis: The reactor can be equipped with fiber optic probes for spectrophotometry or particle size analysis without sampling. However, standard glass vessels are often limited in

4. Operating Principles 4.1. Mixing Dynamics The cantilevered agitator is designed with hydrodynamic bearings. As the agitator spins, the fluid forces help stabilize the shaft. The impeller configurations are typically pitched blade turbines or hydrofoils, designed to provide axial flow for mixing high-viscosity fluids or slurry suspensions. 4.2. Heat Transfer Heat transfer occurs through the glass wall. While glass has lower thermal conductivity than steel, the smooth surface prevents fouling and scaling, which can degrade heat transfer efficiency in metal reactors over time.